【題目】Putting out forest fire is regarded as one of ___________ problems in the world.

A.difficultB.more difficultC.most difficultD.the most difficult

【答案】D

【解析】

句意:撲滅森林大火被認(rèn)為是世界上最難解決的問(wèn)題之一。

考查形容詞最高級(jí)句型,觀察句子這里運(yùn)用的句型是“one of the + adj.最高級(jí)+可數(shù)名詞復(fù)數(shù)+范圍”表示“最……之一”。形容詞最高級(jí)前要有定冠詞thedifficult屬于多音節(jié)單詞,其最高級(jí)應(yīng)該是most difficult,故選D。

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